Paper-perforator.



A. KRAUTH.

PAPER PERFORATOR.

Patented Sept. 26, 1916.

Vynv

UNITED sTATEs PATENT oEEicE.

ALBERT KRAUTH, OF HAMILTON, OHIO, ASSIGNOIt TO'KRAUTH 6c 'BENNINGHOFEN,' A

-COPARTNERSHIP COMPOSED OF ALBERT KRAUTI-I AND CHRISTIAN BENNING- HOFEN, OF HAMILTON, OHIO.

PAPER-PERFORATOR.

Specication of Letters Patent.

Patented Sept. 26, 1916.

Original application filed July 1, 1912, Serial IIa-706,975. Divided and this application filed February 24,

1915. serialno. 10,332.l I Y T0 all 'whom t may concern.'

Be it known that I, ALBERT KRAUTH, a citizen of the United States, and residing at Hamilton, in the'county of Butler and State of Ohio, have invented a new and useful Improvement in Paper-Perforators, of which the following specification is a full disclosure.

My invention'relates to an improvement in perforating devicesV primarily rotary as to their mode ofA operation, in which capacity they may beconveniently embodied conjunctively with say a rotary-printing press, operating upon web' lengths of material. From such' particular use 'the disclosure herein is divisional ,fromV an application filed by me July 1, 1912, Serial No. 706,975, for improvement in printing presses bearing Patent No. 1,132,191 dated Mar. 16, 1915, and to avoid a complete reiteration of the subject-matter of said application in such designated' particular use reference shouldbe had to said' applicationV or for any omissions herein to'impart a complete disclosure of the invention.

As a perforating apparatus, per se, the invention has asv an object to provide coacting members relatively positively rotative forcoperation and registry of their respective punch Vand die elements for making delinitely spaced perforations, longitudinally alined, through the material fed between the members. The, accuracy of the perforation spacing and sharpness of cut are features of prominence, and in particular for perforating strips of'paper for manifolding machines, in which the perforations serve for vregistry and arresting purposes in withdrawing or delivering the paper in measured sheet lengths.

A further object of the invention relates to means for mounting and adjusting the punch members of coacting rotary perforating devices, with micrometric precision to delicately regulate the depth lof intermeshwith their companion members, to obviate injury to the parts from relative differential angular velocity, or injury to the perforation outline in the material perforated.

Further objects and advantages of the invention will be more fully disclosed in the description of the accompanying drawings forming a part of this specication and in such drawings like characters of reference denote correspondingparts throughout the several views of which j F igure 1 is a central vertical section through the perforating apparatus. Fig. 2 is an elevation of one-'end of the mechanism shown'in'Flg. 1. Fig'.l 3 is an enlarged deta1l section through the punching or die members at their point of registration. Fig.

Y ing factors not materially relevant to the invention herein nofeeding devicesl are herein disclosed, andy for such, reference is directed to said aforesaid application, although any well-known feeding means may equally apply.

A pair of side frames 1, 2, comprise a support for the perforating' devices, and each e frame 'has suitable bearingsfor supporting and journaling the shaft 3. The shaft 3 has a gear 4 loosely-mounted thereon adapted to be frictionally clutched thereto. The gear 1' constitutes the driving member for'the perforating devices and may receive itspower from any suitable source. Any well-known means Vmay be employed for controlling the rotation "of shaft 3, they means herein shown being constructed vas follows:

f The inner periphery of the gear 4 has an annular inclined or tapered surface 5 adapted to vbe engaged by 'a 'correspondingly tapered friction disk 6 keyed and s'plined upon the shaft 3. A screw rod 7 is screwthreaded into the end ofthe shaft and is provided with an annular flange 8.V One side of the flange engages with` a collar'9 fixed to the hubV of disk 6 and the opposite side ofthe collar is engagedV by a handv The . strains upon the shafts which might interfere with the accurate registration of the perforating devices mounted upon and revolved with said shafts. The shaft 3 is longitudinally adjustable within its bearings for registering and alining the perforating devices micrometrically, and is accomplished bythe following mechanism: The end of the shaft 3 is studded and Screw-threaded to receive a thimble or hub portion of the hand wheel 18 slidable thereon. rlhe periphery of the hub is screw-threaded and engages with a flange 19 concentric with the shaft 3 and secured to the side frame 2. The end of the shaft has a collar 20 screwthreaded thereon to provide an abutment for the hub of the hand wheel 18, the oppositeV end of the hub engaging with the shaft shoulder. Upon revolving the hand wheel 18, the shaft may be moved longitudinally to any desired degree within a predetermined range. Y

As shown the punch and die elements are secured upon or within disks orcircumferential drums or carriers arranged in pairs or sets with each set suitably spaced from the avdjacent set when more than one series is employed.v The number and relative spacing of the perforating devices is optionaldepending upon the particular job. The construction is such as to provide rigidity when the shafts extend a considerable length between bearings, to avoid flexing of the shafts between the bearings, which if permitted to any considerable degree is detri-v mental to making a clear cut perforation. Additional safe-guard against shaft flexing is made by providing tie-bars 21 spanning the gap between the bearings and connected at their ends respectivelyl to the bracket plates 141 and 15. The shaft 3 carries, as may be herein designated, the die members, while shaft 13 carries the punch members, although they may serve equally as well conversely.

The drawings illustrate a plural series of punch and die members and circumferential carriers therefor, and being the duplicate of one another the description will be conned to one set. The carriers disclosed are of dislr form arranged in integrally united pairs of convenience for a particular use, but the carriers may be variously modilied ywithin the aspect of this invention, in

an arrangement for perforating the material in lines longitudinal of its width.

The die supporting carrier 22 is fixed at a predetermined location concentrically upon the shaft 3 circumferentially, is provided with the die plate 23, seated within notches formed in the periphery of the car` rier 22, and suitably secured thereto by screws, having its punch aperture alined with the clearance apertures 24 radially bored thro-ugh the carrier, providing a discharge sprocket for the punchings. The die plates show two punch apertures coplanar for definite perforator width spacing, with two plates diametrically opposed upon ythe carrier circumferentially for predetermined longitudinal spacing.

The punch supporting carrier f 25 fixed 'Y upon the shaft 13 is of similar design asf its companion carrier 22 on shaft 3, and Ain vided with punch members corresponding in number to the dies on carrier 22 and 1n c0- .coplanar alinement therewith. VIt is pro- Y ordinate arrangementY for progressive lreg-. v

istry and coperation. Each punch comprises a tubular member 26-fitting linto a radial orifice in the carrier, and projecting` from the peripheryofthe carrier thedesired degree for a proper entry depth or mesh into a registering die aperture of the carrier 22. Thus'when the punch ortubular member 26 projects beyond the point @of tangency of the carrier circumference, which tangent point herein is assumed as being, at the die entrance, the angular velocity of the punch exceeds the die,.by reason of the diff: v L

11o` This requires a deli cate setting of either one of the members andV is herein accomplished by rendering the punch members adjustable. The tubular punch 26 co-axially receives a set screw 27, which threads therethrough adapting theset screw' to engage the base of the carrierV punch receiving the bore for varying the reach of the punch, in adjusting the punch, radially to any degree required.

The periphery of the carrier is notched adjacent a punchreceiving boreto provide a clearance for the screw 28 transversely engaging' the pimch for rigidly clamping the punch in any adjusted position.

From the foregoing it will be apparenty' that I provide coacting rotative perforator carriers with radial punch and die members rigidly located thereon, the members registering or meshing to a degree which will not interfere With the rolling travel of the carriers or require enlargement of either member relatively.

The punch 26 is materially strengthened by the screw 27, as it provides an inner core of different tensile strength and tenacity than the tubular portion, and its construction also provides a recess in the cutting end of advantage in sharpening or grinding and perforating.

Having described my invention, I claim 1. In a machine of the classs described, a pair of'rctative perforator carriers for respectively coperatively supporting punch and die members, of a tubular punch member radially supported With one of said carriers, and a screw concentrically engaged Within said'punch member adapted to project through the same to engage a seat in said carrier for adjusting the reach of said punch member.

2. In a machine of the class described, a pair of rotative perforator carriers for re- Copies of this patent may be obtained for spectively cooperatively supporting punch and die members, of a tubular punch member radially supported with one of said carriers, a screw concentrically engaged Within said punch member adapted to project through the same to engage a seat in said carrier for adjusting the reach of said punch member, and means for rigidly clamping said punch member Within its carrier.

3. In a device of the class described, av

my name, as attested by the two subscribing Witnesses. Y

ALBERT KRAUTI-I. i

Witnesses:

C. B. FOSTER, L. A. BECK.

tive cents each, by addressing the commissioner of Eaten, Washington, D. C. 

